The Universal Gravitational Constant G

cassiek
Messages
4
Reaction score
0
Does it apply to planets other than Earth? I'm just learning (cramming) this stuff; sorry if it's a dumb question.
 
Physics news on Phys.org
hi cassiek! :smile:

that's what "universal" means! …

it does exactly what it says on the tin! :wink:
 
haha that's what I thought, just checking! Thanks :)
 
Thread ''splain this hydrostatic paradox in tiny words'

Thread ''splain this hydrostatic paradox in tiny words'

This is (ostensibly) not a trick shot or video*. The scale was balanced before any blue water was added. 550mL of blue water was added to the left side. only 60mL of water needed to be added to the right side to re-balance the scale. Apparently, the scale will balance when the height of the two columns is equal. The left side of the scale only feels the weight of the column above the lower "tail" of the funnel (i.e. 60mL). So where does the weight of the remaining (550-60=) 490mL go...
View full post »

Thread 'The Effect of Linear and Rotational Motion on Measured Weight'

Consider an extremely long and perfectly calibrated scale. A car with a mass of 1000 kg is placed on it, and the scale registers this weight accurately. Now, suppose the car begins to move, reaching very high speeds. Neglecting air resistance and rolling friction, if the car attains, for example, a velocity of 500 km/h, will the scale still indicate a weight corresponding to 1000 kg, or will the measured value decrease as a result of the motion? In a second scenario, imagine a person with a...
View full post »

Thread 'Coulomb gauge implies instantaneous radial electric field?'

Scalar and vector potentials in Coulomb gauge Assume Coulomb gauge so that $$\nabla \cdot \mathbf{A}=0.\tag{1}$$ The scalar potential ##\phi## is described by Poisson's equation $$\nabla^2 \phi = -\frac{\rho}{\varepsilon_0}\tag{2}$$ which has the instantaneous general solution given by $$\phi(\mathbf{r},t)=\frac{1}{4\pi\varepsilon_0}\int \frac{\rho(\mathbf{r}',t)}{|\mathbf{r}-\mathbf{r}'|}d^3r'.\tag{3}$$ In Coulomb gauge the vector potential ##\mathbf{A}## is given by...
View full post »

Similar threads

I A "continous" gravitational field formula r=0 to infinity
Replies
16
Views
722
I Is this analogy between Magnetic Force and Gravitational Force accurate in helping to understand what contributes more to a stronger magnetic force?
Replies
11
Views
2K
I The Non Constant Gravitational Constant (G)?
Replies
2
Views
1K
B Hi, I'm learning physics -- Why do things near me not fall toward me?
Replies
12
Views
1K
I Gravity inside an exponential mass disk
Replies
16
Views
2K
B Mathematics involving a gravitational force
Replies
29
Views
3K
I Does gravitational energy travel like electrical energy?
Replies
1
Views
1K
Does the gravitational rate of acceleration increase within a planet?
2
Replies
54
Views
4K
B Question about the Sun's gravitational influence on the Earth and its moon
Replies
8
Views
2K
B Unit of Gravitational Constant Explained
Replies
1
Views
1K

Hot Threads

Recent Insights

Back
Top